NES 2.0 Mapper 351: Difference between revisions
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[[Category:Multicart mappers]][[Category:MMC3-like mappers]][[Category:Mappers with scanline IRQs]]NES 2.0 Mapper 351 is used for a ''9-in-1'' multicart originally released by J.Y. Company and later Techline. It's an MMC3 clone with outer bank registers. | {{DEFAULTSORT:351}}[[Category:Multicart mappers]][[Category:MMC3-like mappers]][[Category:Mappers with scanline IRQs]]NES 2.0 Mapper 351 is used for a ''9-in-1'' multicart originally released by J.Y. Company and later Techline. It's an MMC3 clone with outer bank registers. | ||
==Set CHR-ROM Base ($5000, write)== | ==Set CHR-ROM Base ($5000, write)== | ||
Revision as of 07:00, 26 May 2020
NES 2.0 Mapper 351 is used for a 9-in-1 multicart originally released by J.Y. Company and later Techline. It's an MMC3 clone with outer bank registers.
Set CHR-ROM Base ($5000, write)
Mask: unknown D~7654 3210 --------- BBBB BB.. ++++-++--- Select 8 KiB CHR-ROM base to be OR'ed with MMC3 bank number
Set PRG-ROM Base ($5001, write)
Mask: unknown D~7654 3210 --------- BBBB BB.. ++++-++--- Select 16 KiB PRG-ROM base to be OR'ed with MMC3 bank number
Set Banking Mode ($5002, write)
Mask: unknown
D~7654 3210
---------
MMmm .?..
|||| +--- Unknown
||++------ Select outer bank size for CHR-ROM (and PRG-ROM in MMC3 mode)
|| 0: 256 KiB
|| 1: 32 KiB
|| 2: 128 KiB
|| 3: unknown, not used
++-------- PRG banking mode
0: MMC3
1: same as 0
2: NROM-256
3: NROM-128
Note
The circuit board detects Reset via interruption of the M2 signal to return to the multicart menu. This makes it difficult to dump the cartridge using a Kazzo device.
